/Engine/Plugins/Enterprise/DataprepEditor/Source/DataprepCore/Public/DataprepAsset.h
[UDataprepAsset::FOnStepObjectsAboutToBeRemoved](API\Plugins\DataprepCore\UDataprepAsset\FOnStepObjectsAboutToBeRemoved) TBaseMulticastDelegate_OneParam GetOnStepObjectsAboutToBeRemoved()